csky: add support for TIF_NOTIFY_SIGNAL

Wire up TIF_NOTIFY_SIGNAL handling for csky.

Cc: linux-csky@vger.kernel.org
Acked-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/arch/csky/include/asm/thread_info.h b/arch/csky/include/asm/thread_info.h
index 68e7a12..21456a3 100644 (file)
--- a/arch/csky/include/asm/thread_info.h
+++ b/arch/csky/include/asm/thread_info.h
@@ -64,6 +64,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SYSCALL_TRACE      4       /* syscall trace active */
 #define TIF_SYSCALL_TRACEPOINT 5       /* syscall tracepoint instrumentation */
 #define TIF_SYSCALL_AUDIT      6       /* syscall auditing */
+#define TIF_NOTIFY_SIGNAL      7       /* signal notifications exist */
 #define TIF_POLLING_NRFLAG     16      /* poll_idle() is TIF_NEED_RESCHED */
 #define TIF_MEMDIE             18      /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK    20      /* restore signal mask in do_signal() */
@@ -75,6 +76,7 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SYSCALL_TRACE     (1 << TIF_SYSCALL_TRACE)
 #define _TIF_SYSCALL_TRACEPOINT        (1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_SYSCALL_AUDIT     (1 << TIF_SYSCALL_AUDIT)
+#define _TIF_NOTIFY_SIGNAL     (1 << TIF_NOTIFY_SIGNAL)
 #define _TIF_UPROBE            (1 << TIF_UPROBE)
 #define _TIF_POLLING_NRFLAG    (1 << TIF_POLLING_NRFLAG)
 #define _TIF_MEMDIE            (1 << TIF_MEMDIE)
@@ -82,7 +84,8 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SECCOMP           (1 << TIF_SECCOMP)
 
 #define _TIF_WORK_MASK         (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
-                                _TIF_NOTIFY_RESUME | _TIF_UPROBE)
+                                _TIF_NOTIFY_RESUME | _TIF_UPROBE | \
+                                _TIF_NOTIFY_SIGNAL)
 
 #define _TIF_SYSCALL_WORK      (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
                                 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)

diff --git a/arch/csky/kernel/signal.c b/arch/csky/kernel/signal.c
index 8b068cf..37ea64e 100644 (file)
--- a/arch/csky/kernel/signal.c
+++ b/arch/csky/kernel/signal.c
@@ -257,7 +257,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
                uprobe_notify_resume(regs);
 
        /* Handle pending signal delivery */
-       if (thread_info_flags & _TIF_SIGPENDING)
+       if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
                do_signal(regs);
 
        if (thread_info_flags & _TIF_NOTIFY_RESUME) {